Nut-lock.



UNITED STATES Patented January :'31, 1905.

:PATENT OFFICE..

l p GEORGE oTIs TUCKER, oF ciMRLitsToii, iLLiNois.

NUT-LOCK.

SPECIFICATION forming part of Letters Patent No. 781,314, dated January31, 1905.

' .Application filed August 3, 1904. Serial No.`219,364. Y.

To a/ZZ whom, t may concern Be it known that I, GEORGE OTISTUCKER,

i a citizen of the United States, .residing at Charleston, in thecountyy oi" Ooles andfStateof Illinois, have invented new and AusefulImprovements in N ut-Locks, oi' which the `following is a speciication.Y

This invention' relates to nut-locks; and it has for its object toprovide an improved device of this kind that will be inexpensive tomanufact'ureandthat will prevent the separation of the nut from the boltexcept bythe destruction of one of saidv parts.

Other objects and advantages will appear in the followingdes'criptionand vwill be more particularly pointed out inthe claim. Y

In the drawings, Figure 1 isa vertical section of the nut and an end ofthe bolt with the distorting device mounted in position beiore that whenthe nut 1 is turned relatively to the bolt 2 the vthreads of the two`parts are destroyed or distorted, so that a reversal'otl the movementcannot take place. This is accomplished in the present instance byproviding the` bolt 2'with one or more longitudinal grooves 3 and thenut 1 with one or more radial or other openings 4. v The bolt 2 and nut1 are fitted together as usual until they have nearly reached the end oftheir relative movement, when an opening 4 is caused to said groove 3.The relative movement ofthe aline with a groove 3 and adistorting-body 5of greater heightor diameter than thedepth' of the groovey 3 andpreferablyT having sharp edges 6 to cut its way through the parts isintroduced through the opening 4 into the ing'4 and 'the vopposite wallof the groove 3 y body 5 is preferably harder than the metal of the boltand the nut.

When a bolt is employed for holding metal objects together, the threadswhich are iitting within the object becomes worn, so that when` it isdesired to tighten the nut there are no threads on the bolt for thispurpose. To overcome this diiiiculty, I bevel at 7 thenut around thebolt-opening, or, in other words, ream out two or more threads, so thatthere is provided several threads on the bolt which do not become wornand with which the nut may engage.

v While I have shown and described the preit to be understood that I amnot to be limited to the form herein shown and that I may make variouschangesin the form, proportion, and minor details of the inventionwithin the scope oi' the appended claim without departing from thespirit or sacrificing any of the advantages of my invention.

Having thus described my invention, what I claim, and desire to secureby Letters Pat,- ent, is-

In a nut-lock. the combination with a bolt provided with a longitudinalgroove, and a nut provided with a radial opening, of aL body of a sizegreater than the depth of the groove,

adapted to be iitted into the opening and so ,l

-ferredv embodiment of my invention, I desire shaped to pass between anddistort the threads of the nut and the bolt on a relative movement ofsaid parts. p

The foregoing speciiication signed this 23d day of July, 1904.

' l GEORGE OTIS TUCKER. In presence of- R. O. ALEXANDER,

C. T. GOODMAN,

